[Equest-users] Building Peak Cooling Load

[Nicholas Caton via Equest-users]

As a general practice I’d advise referencing the net peak listed for the baseline CHW loop in the PS-D report for determining plant peak cooling load, independent of chiller distribution.

One difference between the numbers is that where SS-D is simply the peak load seen at the HVAC coils, the PS-D figure incorporates heat of CHW pumping & distribution, which is additionally handled at the primary equipment.  I’m not sure if that explains the whole gap you’re seeing, but that’d be a part of it.

~Nick
[cid:image001.png at 01D321B5.8BBE0640]
Nick Caton, P.E., BEMP
  Senior Energy Engineer
  Regional Energy Engineering Manager
  Energy and Sustainability Services
  Schneider Electric

D  913.564.6361
M  785.410.3317
F  913.564.6380
E  nicholas.caton at schneider-electric.com<mailto:nicholas.caton at schneider-electric.com>

15200 Santa Fe Trail Drive
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Lenexa, KS 66219
United States

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From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of siddharth patil via Equest-users
Sent: Wednesday, August 30, 2017 4:42 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Building Peak Cooling Load

Hello,
Which report shows actual building peak cooling load? Is it the SS-D report? I am modeling ASHRAE 90.1 2007 system 8 - VAV w/PFP boxes and have chillers in baseline case. Shall I look at the SS-D report peak cooling load or  PS-C equipment peak cooling load? I am getting different values in both reports(SS-D = 529.22 tons and PS-C = 642 tons).

Siddharth
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